Prevalence of abnormal involuntary movements (?spontaneous dyskinesias?) in the normal elderly

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Abstract
Advancing age has been associated with increased prevalence of abnormal involuntary movements in neuroleptic-treated patients. In order to investigate the possibility that the aging process itself might produce involuntary movements clinically indistinguishable from tardive dyskinesia, a group of healthy elderly volunteers were systematically examined. A 4% prevalence rate of mild involuntary movements was found, suggesting that the aging process itself is not likely to produce dyskinesias without other contributing factors coming into play.

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